baber/WOPTO huggingface dataset:
Patent GB-928917-A (GB)
Title: Photographic camera
IPC: G03B35/10
Filed: 1960-06-14
Abstract: 928,917. Photographic cameras; stereoscopic and panoramic photography. S. D. CROCKWELL. June 14, 1960, No. 20862/60. Classes 97 (1) and 98 (1). A camera for simultaneously making separate exposures on a photographic film located within the camera in a fixed circular arcuate position comprises a plurality of objective lens systems mounted in spaced relation on a rotor for concomitant movement along a path concentric with the film, each objective lens system including a lens and a plane mirror and being associated with an exposure aperture also carried by the rotor and each associated lens, mirror and exposure aperture being relatively positioned so as to produce a sharp image on the film during rotation of the rotor in one direction to permit exposure of the film. As shown (Fig. 1), a camera comprises a cylindrical handle portion 4, a rotatable cylinder 22 and a cap member 64 which is releasably secured through the cylinder 22 to the portion 4. Mounted in wing portions 24 on the cylinder 22 (Figs. 1, 6 and 8) are two plane mirrors 40 and two objective lenses 28, 30 for exposure through exposure slits 42 in the cylinder 22 of film F which is supported in a circular arc by a cylindrical cassette 46 between a cavity 54 for a supply roll and a cavity 56 for a take-up roll. The camera is cocked by rotating the cylinder 22 in an anticlockwise direction against loading of a driving spring 82 until held by a spring latch (cf. Fig. 10, not shown). The camera is released for exposure by depressing a knob 92 which operates said spring latch, said exposure resulting in two stereoscopically related panoramic pictures of approximately 150 degrees arc each. Alternatively, if an attachment 115 comprising two plane mirrors is fitted to one of the objectives, a single panoramic picture of 300 degrees arc (or more) is obtained. Each objective 28 and 30 includes an iris diaphragm, the setting studs 36 of which are connected for common adjustment by bands 34. A cylindrical member 102 with two groups of exposure slots 104 (Fig. 13) of different widths is provided immediately inside the cylinder 22 for effectively varying the exposure time. An adjusting knob 106 slidable in a slot 108 of the cylinder 22 is provided for the member 102. Exposure of the film in the cocked position (shown) is prevented by fixed baffles 116a and 118. A cylindrical shutter member 100 immediately inside the member 102 is provided with slots 110 which register with apertures 42 during exposure. At the end of exposure, a projection 114 on this member engages with a stop 116 to close the exposure aperture, whereby fogging of the film during recocking is prevented. A knob 111 sliding in a slot 112 of the cylinder 22 is provided for re-adjusting the member 100. A winding knob 70 for the film F is provided in the cap 64 and may be coupled with a known exposure counting device (Fig. 3, not shown).
Patent GB-406572-A (GB)
Title: Improvements in or relating to piezo electric crystal arrangements
IPC: H03L1/04
Filed: 1933-07-24
Abstract: 406,572. Piezo - electric crystals. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 24, 1933, No. 20863. Convention date, July 22, 1932. [Class 40 (v).] A piezo-electric crystal Q is supported in a holder F inside an exhausted vessel; the holder has a heating - winding W1 and thermostat winding W2; the faces of the crystal are out of contact with the electrodes E ; the electrodes are separated by glass spacing rings J1, J2; and the crystal is supported on points S which bear into a circumferential groove or into recesses in the middle plane of the crystal, these points being carried by a holding-ring R. The points may be formed as set screws or one of them may be mounted on a flat spring.
Patent GB-1147663-A (GB)
Title: Improvements in or relating to magnetically operable valves
IPC: H01F7/16
Filed: 1966-05-11
Abstract: 1,147,663. Valves. SKINNER PRECISION INDUSTRIES Inc. 11 May, 1966 [12 May, 1965], No. 20863/66. Heading F2V. A magnetically operable valve comprises a valve seat 18, Fig. 1, a movable plunger 22 co-operating with the seat, a pair of magnetic flux sources in a closed magnetic circuit, and means for reversing the polarity of one of the sources for causing the flux to flow into or away from the plunger to operate the valve. One flux source is formed by a permanent magnet 36 of a material such as Alnico while the other consists of an element 38 of ferrite material and an energizing coil 40 connected to a battery 42 through a reversing switch 44. Flux flows through the plunger 22 and an abutment plug 28 to open the valve when the magnet 36 and the element 38 produce similarly directed magnetic fields while the flux flow through the plunger is reduced to allow the valve to be closed by a spring 26 when the field from the element 38 is reversed. A further coil may be provided around the plunger to reinforce the flux flow when the valve is to be opened. When only the coil 40 is energized by a switch, which may be used in conjunction with a capacitor or diode, the valve closes. In Fig. 6, a bar magnet 94 which may be rotated through 180 degrees by a drive motor 90 constitutes the source of reversible flux. Alternatively a pair of oppositely disposed bar magnets may be mounted on a soft iron shield so that either of them can be moved to operative position.
Patent GB-827592-A (GB)
Title: Improvements relating to the heat treatment of solid fuel
Inventor: WILLIAMS FRANK ARCHER
IPC: C10B7/06
Filed: 1955-07-19
Abstract: 827,592. Carbonizing processes. MINISTER OF POWER. Oct. 18, 1956 [July 19, 1955], No. 20868/55. Class 55 (1). Solid fuel is passed through a carbonizing chamber 1 in the form of a thin layer 8a supported on a layer 7a of inert non-fusible and non-agglomerating material carried by the hearth section 2a of a travelling-grate 2. Two hoppers 5, 6 supply respectively the inert material 7, which may be ¢-inch graded coke, porcelain balls or bricks, and the carbonaceous fuel 8. The space 9 beneath hearth section 2a is divided into two compartments 10, 11 formed with ports 10a, 11a in their upper walls. Part of the gas evolved in carbonization, burns with air injected through inlets 14, the gases at a temperature of about 1000- 1200‹ C. being drawn, by means not shown, downwardly through layers 8a, 7a and hearth section 2a to pass through ports 10a, compartment 10 and duct 10b into a heat-exchanger 12. After cooling, the gases return through duct 11b, compartment 11, ports 11a, hearth section 2a and layers 7a, 8a, to extract heat from layer 7a and give it to layer 8a and also to cool both layers so that the materials are not spontaneously ignitable when they reach the fuelreceiving hopper 19. Excess gas passes out at 1a In a modification the heat-exchanger 12 is not employed and cold gas is added to the hot gases. In a further form the space 9 is divided into a number of pairs of compartments similar to compartments 10, 11.
Patent GB-1413566-A (GB)
Title: Compounds produced in a synthesis of prostaglandin
IPC: C07C405/00
Filed: 1973-05-02
Abstract: 1413566 Silylated prostaglandin precursors MERCK & CO Inc 2 May 1973 [8 May 1972] 20873/73 Heading C3S [Also in Division C2] The invention comprises 3#-[tri(C 1-6  alkyl)- silyloxy] - 2α - (3 - oxo - 1 - octenyl) - 5 - oxo- 1# - cyclopentaneheptanoic acid 5 - cyclic ethylene acetals, 3#-[tri(C 1-6  alkyl)silyloxy]-2α- (3α - hydroxy - 1 - octenyl) - 5 - oxo - 1#- cyclopentaneheptanoic acid 5-cyclic ethylene acetals and C 1-6  alkyl esters and stereoisomers thereof. The free acid form and C 1-6  alkyl esters of the 3-oxo-compound are prepared by tri- (C 1-6  alkyl)silylating the corresponding 3#- hydroxy compounds, and subsequent reduction affords the C 1-6  alkylesters of the corresponding 3α-hydroxy compounds. Suitable silylating agents are N,O-bis-trimethylsilyltrifluoroacetamide, N,O - bis - trimethylsilylamide, trimethylsilylimidazole and hexamethylsilazane. The reducing agent is preferably an alkali metal borohydride and such reduction affords a mixture of 3α- and 3#-hydroxylisomers with the former predominating. These may be separated prior to or subsequent to mild hydrolysis to remove the silyl group and the 3#-isomer may be oxidized with MnO 2  to give 3-oxo compound.
Patent GB-768573-A (GB)
Title: Hydraulic power transmission systems for road vehicles
Inventor: LAWRENCE OWEN NAPIER
IPC: B60K17/10
Filed: 1954-07-17
Abstract: 768,573. Motor vehicle hydraulic driving gear. LUCAS (INDUSTRIES), Ltd., J. July 6, 1955 [July 17, 1954], No. 20874/54. Class 79(2). [Also in Group XXIX] A road vehicle hydraulic power transmission system includes a pair of pumps in parallel, the pump b having a constant output and the pump a having a variable output, road-wheel actuating motors e, f and valves k rendering one or both the pumps operative. As shown the vehicle engine c drives the pumps a, b the output of the pump a being varied by a lever d. The pumps a, b and the hydraulic motors e, f are of the swash plate type and the connection between the pumps and motor includes spring-loaded pressure relief valves f interconnecting the inlet and outlet of the pumps, a spring loaded valve m, the interconnected valves k for isolating the pump b from the pump a and motors e, f, and interconnected valves o for reversing the direction of the motors e, f. The arrangement is such that the vehicle is started from rest on the pump a and maximum speed is attained with the pump a at maximum output and the pump b in circuit. The system is of closed circulatory type and is replenished with liquid from a tank h through a pump g and a non-return valve i. The reversing valves o may be replaced by isolating the pump b and reversing the action of the pump a.
Patent GB-1040258-A (GB)
Title: Improvements in fabric or cloth laying up machines
Inventor: EDWARDS ARTHUR
IPC: B65H45/103
Filed: 1964-05-21
Abstract: 1,040,258. Layering fabric. PHILLIPS & SONS (MANCHESTER) Ltd. May 20, 1965 [May 21, 1964], No. 20970/64. Heading D1S. In a fabric laying machine of the type in which fabric 1 is drawn from a roll 10 or a lap and laid on a table B by a tucker blade 27 on a carriage traversing the table, the fabric 1 passes over a front roller 19 one end of which is mounted in bearings in the machine frame to rotate concentrically with a stationary polished roller 20, Fig. 2 (not shown), formed with two grooves 21, 22 separated by a land 23 forming a datum line for one edge of the fabric 1 as it passes over the roller 19. A beam of light from a lamp 24 is directed through the grooves 21, 22 to actuate photo-electric cells 25, 26 so as to pass twice through the fabric so that even flimsy fabrics render the beam substantially less brilliant. The cells 25, 26 are electrically coupled through brushes 30, 33 to coils 28, 31, respectively, Figs. 4 and 5 (both not shown), of electromagnetic clutches arranged in rings 29, 32 which are continuously driven from worms 35, 36, respectively, Fig. 4, driven in opposite directions by a worm 37 rotated by a motor which also drives the roller 19. When the cell 25 energizes the coil 28 a disc 40 keyed to a spindle 18 is drawn into contact therewith to rotate the spindle. Similarly, when the cell 26 energizes the coil 31 the spindle 18 is rotated in the reverse direction. Rotation of the spindle 18 rotates a lever 17 loosely held in engagement therewith by a spring 41. This rotation is transmitted by a link 16, Fig. 1, through an arm 15 to an arm 12 rotatable about a rod 14 to one of a pair of brackets 11 carrying the roll 10. The brackets 11 are connected by a rod 45 to move the roll 10 to bring the fabric edge back on to the land 23. Movement of the arm 12 is limited by stops 43, 44.
Patent GB-1507856-A (GB)
Title: Lightweight aggregate
IPC: C04B28/04
Filed: 1975-05-16
Abstract: 1507856 Aggregate for concrete AMAX RESOURCE RECOVERY SYSTEMS Inc 16 May 1975 [19 July 1974] 20980/75 Headings C1H and C1A [Also in Division B2] A lightweight aggregate for concrete is produced by recovering from the burning of pulverized coal in a dry bottom furnace. Bottom ash not more than 25% passes through 100 mesh (US) and has less than 1% iron pyrites and not more than 5% SO 3  by weight. Particles exceeding # inches are preferably removed. Concrete mixes typically contain 8-20% cement, 10-50% sand and balance of the bottom ash.
Patent GB-586958-A (GB)
Title: Improvements in or relating to remote control systems, with special reference to gliding bombs, aircraft and the like
IPC: F41G7/00
Filed: 1943-12-15
Abstract: 586,958. Wireless systems. TURCK, J. P. G. Dec. 15, 1943, No. 21068. [Class 40 (v)] [Also in Group XXXVIII] A device for interfering with the control of a radio-guided projectile &c. comprises a radioreceiver which tunes itself to the frequency of the guiding wave and simultaneously tunes a transmitter to the same frequency. An additional manual control may be provided to make the transmitted frequency different from that received. As shown, the received wave is mixed in a tube 20 with a locally generated wave from an oscillator 21 which is automatically tuned by a condenser 24 and shaped as shown in Fig. 2 and connected to a galvanometer movement 30 connected to a known discriminating circuit to keep the beat frequency constant. The reception of a signal also causes the break down of a gas-filled tube 29 which, after a delay of one second energises relay 42 to switch off the receiver and switch on the transmitter. The frequency of the latter is determined by mixing the oscillation from the heterodyne generator 21 with those generated under control of a crystal 33 in a tube 31 and equal to the standard intermediate frequency. The radiated frequency is thus equal to that received but may be modified by manipulation of condenser 24a. After 5 seconds, the relays fall back and control of the receiver is resumed.
Patent GB-268213-A (GB)
Title: Improvements in or relating to air heating or cooling and circulating apparatus
IPC: F28D1/02
Filed: 1926-08-27
Abstract: 268,213. Pickard, F. H. Aug. 27, 1926. Heating air.-Apparatus for circulating heated air in buildings comprises tubes 2 arranged around and parallel with the axis of a fan 1, the tubes being connected to a single annular header 3 to which the supply and outlet pipes of the heating medium are connected. The tubes are closed at their upper ends, above which is a capping 8 secured by bolts 9. The fan may draw external air through an axial flue extending through the roof of a building and deliver it radially into the room, or it may circulate the air of the room radially outwards or inwards. It may be driven by a belt pulley 7 or a directly connected motor carried by a spider 5. Baffles may be provided amongst the tubes.
Patent GB-532267-A (GB)
Title: Improvements in or relating to liquid flux compositions for welding or brazing
IPC: B23K35/38
Filed: 1939-07-20
Abstract: 532,267. Fluxes. ULMER, W. L. July 20, 1939, No. 21144. Convention date, July 21, 1938. [Class 82 (ii)] A liquid flux for brazing or welding comprises methyl borate preferably in the proportion of 15-50 per cent. by volume and an organic liquid diluent consisting of a ketone ether or ester of an organic acid and containing substantially less than 50 per cent of oxygen. The flux may also contain methyl alcohol in proportion less than the borate and preferably in azeotropic proportions. Examples of the diluent are acetone, isopropyl ether and ethyl formate, and methyl or ethyl acetate. The diluent should have a boiling point of 50-80 ‹C. and when methyl alcohol is used, between 50‹ and 60‹C. In an example, a flux contains 32 per cent. of methyl borate, 12 of methanol and 56 of acetone.
Patent GB-1149911-A (GB)
Title: Hydrophilic polyurethane foam
IPC: C08J9/40
Filed: 1966-05-12
Abstract: 1,149,911. Polyurethane graft polymers. SCOTT PAPER CO. 12 May, 1966 [19 May, 1965], No. 21216/66. Headings C3C, C3G and C3R. A hydrophilic, porous polyurethane foam is produced by grafting a water-soluble or watermiscible monomer on to a hydrophobic, porous, polyurethane foam in the presence of an organic free radical initiator. The polyurethane foam may be one prepared from a polyester, e.g. a glycol-adipate polyester resin and toluene diisocyanate in the presence of a wetting agent, N-ethyl morpholine and water, or from a polyether or polyether amine. In one embodiment the foam, which may be open-celled or reticulate and may be compressed and heated prior to grafting, is submerged in an aqueous medium containing the monomer e.g. acrylic acid, hydroxyethyl acrylate, (meth)acrylamide, dimethylaminoethyl methacrylate, polyethylene glycol (meth)acrylate or an analogous derivative of chloracrylic, cyanoacrylic acid or ethacrylic acid, or a monoester of maleic or fumaric acid and ethylene or propylene glycol. The catalyst is benzoyl peroxide, optionally together with dimethyl aniline as promoter and the polymerization medium may also contain an oxygen scavenger e.g. sodium bisulphite and a conventional wetting agent. Alternatively, the foam is impregnated with a solution of the initiator prior to contact with the monomer. The foam may be mechanically worked during the polymerization, which is preferably carried out under N 2 . After polymerization, a graft polymer formed from an acid monomer may be treated e.g. with Na 2 CO 3 , K 2 CO 3 , CH 3 CO 2 K or (CH 3 CO 2 ) 2 Ca to convert acid groups to salt groups. In the examples the monomers used are acrylic acid, hydroxyethyl methacrylate, dimethylaminoethyl methacrylate and acrylamide and a mixture of the first two of said monomers. Mercaptosuccinic acid is used as a molecular weight regulator and acetic acid as a solvent for the benzoyl peroxide in Example 12.
Patent GB-336281-A (GB)
Title: Improvements in coin-freed sales apparatus
IPC: G07F5/04
Filed: 1929-07-10
Abstract: 336,281. Eller, F. June 27, 1929, [Convention date]. Coin action, weight and multiple-coin.-Coinfreed sales apparatus of the type operative on the insertion of a plurality of coins which, except the last one, are temporarily arrested in the shoot in positions for preparing a path for the last coin to the operating mechanism, is provided with a second shoot adapted to receive coins of a denomination different from that of the coins inserted in the first-named shoot and means controlled by these coins for varying the capacity of the first-named shoot. As shown in Fig. 1, the shoots 2, 3 are adapted to receive three pennies and six halfpennies respectively. On inserting three pennies in the shoot 2, the first two coins are arrested by pins 6 on the pivoted levers 7 and the third coin passes to the right of these and falls down the shoot 5 to close the switch 9, 10, whereby the mechanism of the sales apparatus is operated. If two pennies and two halfpennies are inserted, the halfpennies fall into the pockets 12, 13 respectively where.by the lever 7 is depressed to release the second penny which falls and operates the switch 9, 10. The gate 15 is now worked outwards through the electric motor 22 whereby hook-shaped cleats 23 attached to the gate eject the coins from the pockets and the penny still remaining in the shoot 4 falls through the opening 24.
Patent GB-531421-A (GB)
Title: Improvements in or relating to variable inductance devices
IPC: H04B1/03
Filed: 1939-07-21
Abstract: 531,421. Variable resistances. BENDIX AVIATION CORPORATION. July 21, 1939, No. 21246. Convention date, July 22, 1938. [Class 37] [Also in Group XXXV] A variable inductance comprises a coil structure with a helical winding thereon and a brush carrier which moves relatively to the coil when the latter is rotated, the carrier being formed as a resilient element having an insulating shoe at one end which bears against the winding and a brush at the other end which makes electrical contact with the winding. The frame comprises end plates 10, 11 of insulating material spaced apart by four bars, of which two, 12, 13 are of conducting material. The coil 21 is wound in a groove on a cylinder 19 provided at its ends with shafts 23, 23a mounted for rotation in bearings in the end plates 10, 11. Engaging the bars 12, 13 are brushes C1, C2 which travel longitudinally on rotation of the cylinder 19 by means of a screwdriver inserted in a slot 26 in the end of the shaft 23a. Each brush comprises a resilient strip having arms 28, 29, Fig. 3, of which the arm 28 carries the sliding contact 30 and the arm 29 carries a transverse insulating shoe 34 extending over at least two turns of the winding 21. The centre of the brush is formed with turned-up flanges 36a with recesses for engaging the bars 12, 13. The sliding contact 30 has a groove 31, Fig. 4, and bevelled edges 32, 33 to permit the entrance of a turn of the winding into the groove through actuation by rotation of the coil. The contact 30 may be lifted out of engagement with the winding and adjusted along the coil independently of the rotation of the coil. A single brush only may be employed. When two brushes are employed, one circuit may be connected to wires 17, 25 and a second circuit to wires 18, 25.
Patent GB-441400-A (GB)
Title: New azodyestuffs for leather
IPC: C09B33/24
Filed: 1934-07-20
Abstract: Trisazo dyestuffs are manufactured by coupling resorcinol, in aqueous alkaline medium and in the order specified, with a diazotized mixture of 3- and 5 - aminosalicylic acid (or diazotized 5 - aminosalicylic acid), diazotized 6 - chloro - 2 - aminophenol - 4 - sulphonic acid and diazotized 4-nitroaniline. The products may be used for dyeing or staining leather of vegetable or chrome tannage brown shades.
Patent GB-972699-A (GB)
Title: Improvements in portable cases especially for filing systems
Inventor: COLLIER ROYDON JAMES
IPC: B42F15/00
Filed: 1961-06-13
Abstract: 972,699. Portable filing cases. NATIONAL LOOSE LEAF CO. Ltd. June 13, 1962 [June 13, 1961], No. 21310/61. Heading B8P. [Also in Division B6] A portable filing case comprises a metal casing 2 with side walls 14, 16 and end walls 10, 12, a metal lid 4 and components 6, 8 of a plastics material which partially or completely cover the end walls 10, 12. The top edges of the end walls 10, 12 are folded inwards at 28 and are a little below the top edges of the side walls 14, 16 to act as rails for the suspension bars of the files. The components 6, 8 are attached to the metal end walls 10, 12 by means of screws 38 and bosses 35, 36, 37 and they overlap the bottom 18 of the casing 2 to form bearing surfaces, and may be recessed at 33 to facilitate gripping of the case when lifting it. A handle 22 is provided in a depression 20 in the lid 4, which is hinged to the side wall 14 by a pair of hair-pin shaped wires 44.
Patent GB-703143-A (GB)
Title: Improvements in or relating to electromagnetic brakes
Inventor: SIEGNER WILHELM
IPC: F16D55/00
Filed: 1952-08-26
Abstract: 703,143. Electromagnetic brakes. BAMAGMEGUIN AKT.-GES. Aug. 26, 1952, No. 21404/52. Class 103(1) In an electromagnetic brake of the type in which the operating coil 2 requires direct current and only alternating current is available, the dry rectifier 13, for conversion of the current, is arranged stationarily in a space within the casing 6 where it will be cooled by an air current created by the hollow rotating brake member 10. As shown the cooling air is sucked in through the cavity of a coil spring 5 and forced out througt openings 7 in the casing, but the air flow may be in the reverse direction. The brake shown has a movable armature 3 which is urged by the spring 5 to press brake mem ber 10 against plate 8 and is released by energization of the coil 2.